Manufacturer Part Number

ATSAMD51J19A-MU

Description

32-bit ARM Cortex-M4F microcontroller. 120MHz speed, 512KB embedded Flash memory, 192KB SRAM, suitable for high-performance, real-time processing in various electronics. Housed in 64-pin VQFN package (size: 9mm x 9mm). Programmable via standard ARM toolchains. Operates from 1.71V to 3.63V.

Specifications

Core: ARM Cortex-M4F, single-core, 32-bit

Max Speed: 120MHz

Flash Memory: 512KB

SRAM: 192KB

EEPROM: Not included

I/O Pins: 51

Data Converters: 24 channels 12-bit ADC, 2 channels 12-bit DAC

Connectivity: EBI/EMI, I2C, IrDA, LINbus, MMC/SD, QuadSPI, SPI, UART/USART, USB

Voltage Supply: 1.71V to 3.63V

Operating Temp: -40°C to 85°C

Oscillator: Built-in

Package: 64-VQFN (9 x 9mm), exposed pad

RoHS: Compliant

MSL: 3 (168 hours) moisture sensitivity

Device Structure

Single-chip microcontroller based on ARM Cortex-M4F. Features Flash and SRAM memory, multiple I/O, digital and analog peripherals. Integrated power management. Uses surface-mount VQFN package.

Performance Characteristics

High-speed 120MHz core supports real-time data processing. Advanced peripherals (DMA, PWM, I2S, QSPI). 24 ADC and 2 DAC channels ideal for mixed-signal applications. Low-power operation and wide voltage support fit battery-powered systems. Integrated brown-out detection and power-on reset provide reliable operation.

Application Environments

Best for industrial control, consumer electronics, wearable devices, IoT nodes, motor control, automotive, test equipment, data acquisition, touch panels, communication interfaces, and display controllers.

Selection Guidelines

Choose this model if high CPU performance and multiple serial/peripheral interfaces are necessary. Suitable for applications needing large flash and RAM, multiple analog functions, and compact QFN packaging. Compatible with standard ARM development tools and middleware.

Usage Considerations

Static precautions required due to MSL 3 rating. Avoid exceeding voltage or temperature limits. Ensure correct layout for VQFN thermal pad connection. Follow recommended reflow profiles. Storage must match RoHS requirements. External debug/programming equipment needed for initial firmware loading.

Potential Equivalent/Replacement Models

Other Microchip SAM D51 variants may fit, such as ATSAMD51J20A-MU (higher memory variant), ATSAMD51P19A (different pinouts/features), or ATSAMD51G19A-MUT (smaller packages). Check Atmel ATSAMD series compatibility. No direct pin-to-pin alternatives from other manufacturers confirmed. If an exact equivalent or substitute part is required, please contact our Ariat-Tech sales team for up-to-date replacement options and cross-reference.

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